Incandescent or other atmospheric gas-burner.



No. 790,718. PATENTED MAY 23 1905.

G. & I. W. BRAY. INGANDESGENT OR OTHER ATMOSPHERIC GAS BURNER APPLICATION FILED SEPT. 22, 1903.

UNITED STATES Patented May 23, 1905.

PATENT OFFICE.

GEORGE BRAY AND JOHN W. BRAY, OF LEEDS, ENGLAND.

SPECIFICATION forming'part of Letters Patent No. 790,713, dated May 23, 1905,

Application filed September 22, 1903. Serial No. 174,219.

To all whom, it may concern:

Be it known that we, GEORGE BRAYand JOHN WILLIAM BRAY, subjects of the King of Great Britain and Ireland, residing in Leeds, county of York, England, (whose post-office address is Bagby Works, Leicester Place, in said city,) have invented certain new and useful Improved Means of Adjusting the Gas-Sn pply to Incandescent or other Atmospheric Gas- Burners, of which the following is a specification.

This invention relates to improved means of adjusting the gas-supply to incandescent and other atmospheric gas-burners.

Hitherto there has been difficulty in increasing or decreasing the supply of gas to incandescent and other atmospheric gas-burners Without at the same time increasing or decreasing the pressure of gas at the gasnipplethat is, at the point where the gas enters the Bunsen tube or mixing-chamber. For instance, if the gas-supply be too great for the burner and the gas-tap be used to lessen the supply the lessened gas-supply at the tap lessens the gas-pressure at the gasnipple, and, on the contrary, if the gas-tap be used to increase the gas-supp] y such increased supply at the tap increases the gas-pressure at the gas-nipple. As the motive power for drawing in the air to atmospheric burners is the gas under pressure, it is obvious that variation of gas-pressure varies the air-supply. It is important, therefore, that the gas-pressure should not be altered when the gas-supply is being increased or decreased to suit the burner.

By means of our invention we are enabled to increase or decrease the gas-supply without interfering with the gas-pressure at the gasnipplethat is, as before stated, at the point where the gas enters the Bunsen tube or mixingchamber-and it refers entirely to that class of burner in which there'is more than one hole in the gas-nipple for the emission of the gas.

In describing our invention in detail reference is made to the accompanying sheet of drawings, similar letters indicating similar parts, in which Figure 1 represents a plan of a gas-nipple constructed according to our invention. Fig. 2 is an elevation of the same. Figs. 3 and 4c are sectional elevations taken at right angles to each other. of another form of nipple for attaining the object above noted; and Figs. 6, 7, and 8 are sectional elevations of the plug shown in Fig. 5, taken, respectively, on the lines 6 6, 7 7, and 8 8 of said figure.

In carrying out our invention we construct a gas-nipple A of suitable material. The holes B in the gas-nipple A are made of suitable size to pass the required quantity of gas and are by preference counterbored, so as to form a recess to each hole on the under side, as shown in Figs. 3 and 4. In the event of there being, for example, five holes B in the gas-nipple, as shown in Fig. 1, we make one central hole and place four other holes in a circle around the central hole at a suitable distance therefrom arranged in such a manner as to leave three holes in a straight line. Intersecting the three holes in their counterbored part we drill and tap a hole C, reaching nearly across the gas-nipple, and insert therein a screwed plug D, which practically fits the tapped hole 0, before referred to.

To increase or decrease the supply of gas to the burner, (after the gas-tap is turned on,) we screw in or out the screwed plug D, covering or uncovering Wholly or partially one or more of the three aforesaid holes B, thereby increasing or decreasing the gas-supply to the Bunsen tube or mixing-chamber, leavingthe remaining holes to give the necessary gas-supply at practically unaltered pressure.

Although We use by preference a tapped hole C and screwed plug D, a plain hole and a plain plug may also be used, as indicated in Figs. 5 to 8, inclusive.

By this method one burner can be so controlled in its gas-supply as to be effectively used for any usual gas-pressure and also for gases varying considerably in their lighting power, whereas burners without such arrangement are more limited in their range of usefulness.

A larger or smaller number of holes than five may be used, and more than three holes may be placed in a line for the screwed 01' Fig. 5 is a sectional elevation other plug to act upon. The screwed or other plug D may project "from its position in the burner-nipple to the outside of the burner, such plug having a handle or the like E, whereby the same may be conveniently adjusted by the finger or otherwise, with the burner and mantle in position.

As illustrated in Fig. 5, a modified form of our invention provides a plain hole intersecting the line of the three holes of the aforesaid gas-nipple A, and there is in said plain hole a gas-plug D, formed with the necessary holes or gasways b, b, and 6 corresponding with the three holes B in the gas-nipple.

From Figs. 6 to 8, inclusive, it will be seen that while there is opposite one of the holes B a passage opening at diametrically opposite points on the surface of the plug there is opposite another one of said holes a passage having four openings, while opposite the third hole B is a passage in the plug having six openings upon the surface thereof. With such construction it is possible by turning the plug through a small angle to cut oil" one of the holes B and by a still further movement of the plug to close the second and finally the third hole, as may be required. To increase the gas-supply, the operation will be reversed.

WVhat we claim as our invention is 1. Thecombination of a gas-nipple having a plurality of passages for gas and a channel intersecting said gas-passages, with a solid plug in said channel, the same being provided with a plurality of passages placed side by side and so arranged that when the plug is in one position they communicate with the passages in the nipple and when the plug isin another position they are cut off from said passages, substantially as described.

2. The combination of a gas-nipple having a plurality of passages for gas and a passage intersecting said gas-passages, with a solid plug in the intersecting passage, the-same having a series of passages placed so that its revolution causes all the passages in the nipple to be closed or one or more of the same to be opened, substantially as described.

3. The combination of a gas-nipple having within it a main chamber for connection to a source of supply for gas, a series of gas-passages leading from said main chamber, and an adjustable plug in the line of a plurality of the passages, said plug being solid except for a plurality of series of passages placed to either close all of saidseries of passages from the main chamber or to permit certain of them to be open, substantially as described.

4. The combination of a gas-nipple having a plurality of passages for gas and a passage intersecting said gas-passages with a plug in the intersecting passage, the same being revoluble and having through it passages extending in lines at different angles to each other, substantially as described.

5. The combination of a gas-nipple having a plurality of passages for gas and a passage intersecting said gas-passages with a plug in the intersecting passage, the same being revoluble and having through it passages placed to respectively coact with the gas-passages, certain of the passages in the plug consisting of a plurality of channels at an angle to each other, substantially as described.

6. The combination of a gas-nipple having i a plurality of passages for gas and a passage intersecting said gas-passages with a plug .in the intersecting passage, the same being revoluble and having through it passages placed to respectively coact with the gas-passages, all of the passages in the plug having certain portions placed to simultaneously communicate with the gas-passages and other portions communicating with the gas-passages when 4 the plug is turned, substantially as described.

7. The combination of a gas-nipple having a channel extending into its interior, there being a series of passages connected to a source of gas-supply and opening into said channel, anda second set of passages extending from said channel to the atmosphere, with a plug in the channel, said plug being solid except for a plurality of passages extending transversely through it and so placed as to connect the two series of passages with each other when said plug is in a given position or positions and to break such connection when said plug is in another position, substantially as described.

In witness whereof we have hereunto set our hands in the presence of two witnesses.

GEO. BRAY. JOHN W. BRAY.

i/Vitnesses:

CLIVE WVAUGH, CHAS. GILLIARD. 

